Writing-lead-pointing device



June 29 1926. 1,590,330

R. D. STEVENSON WRITING LEAD POINTING DEVICE Filed Nov. 11 1922 26 "2 v -271U7Z777$ l8 2? M @8 MEW Patented June 29, 1 926.

1 UNITED STATES g p 1,590,330 PATENT OFFICE.

RALPH n. s'rnvnuson, or gunman, onto.

, wnrrme-nnAn-rom'rme, mivroa.

Application filed November 11, 1922. Serial No. 800,223.

The present invention relates to an implement or instrument for pointing the end of a lead, such as is used in writing pencils of the type having a casing with a pointed end through which the lead is fed by suitable internal mechanism.

In writing pencils of this type the objection has been that the writing leads are dull,

and there is no convenient means for sharpening them except the use of a knife, which is not always convenient.

In the resent invention the implement for pointing the writin leads may be formed so that it may be irectly associated with the casing of the writing pencil, either formed as apart thereof, or it may be made up as a. separate part or piece that may be inserted in, for instance, a removable end cap for the writing pencil.

' Reference should be had to the accompanying drawings forming a part of this specification,- in which Fig. 1 is an elevation of a writing pencil of the type to which the invention isapplicable; Fig. 2 is an elevation of a writing lead of usual form, and

Fig. 3 is an elevation of a writing lead' which is pointed. Fig. 4 is a sectional elevation showing one form of my invention applied to the removable cap of such a writing pencil as is shown in Fig. 1; Fig. 5 is a. bottom plan view of the insert which forms L a part of Fig. 4; Fig. 6 is a sectional eleva tion of the insert such as is shown in Fig. 5;

Fig. 7 is a sectional elevation of a cap with a modified form of insert; Fig. 8 is a sectionalelevation of a, cap with a modified form of insert; Fig. 9is a bottom lan view suitable material. vation showing a cap for a penc l in which the sharpening element is formed in the cap of the insert as shown in Fig. 8; ig. 10 is a sectional elevation showing a sharpening member which is attached to the outside of the cap of a writing pencil. Fig. 11 is atop plan view of the attachment shown in Fig.-

10.- Fig. 12 is a sectional elevation showing a sharpening insert which may be made of such abrasive material ascarborundum. Fig. 13 is a sectional elevation showing metal insert which is held in place by-a cork or Fig. 14 is a sectional eleit'self.

"Referring to the drawings, there 18 shown in Fig. 1 a type of writing pencil which is ve well known, in which there is a hollow casing 1 which at-the end portion has a conv verging or part .2, through the end of which a' writing lead 3 is extruded by mechanism which may be contained within the casing 1. v

The mechanism by which the writing lead is fed forward is usually operated by a movable cap member 4 which not only serves to of which forms a recess 7. The wall'of the recess 7, is roughened, as by forming rid es or ribs extending longitudinally, or -m 0t er words, the surface is so prepared that it has an abrasive action so that wheii the end of a writing lead, such as shown in Fig. 2, is inserted in this recess 7 and the lead turned it gill put a'point upon the end oi such a The member 5 may conveniently have the rounded ortion notched, as. indicated at 8,

sothat t e edge of the rounded portion is scalloped. TlllS member 5 may be inserted in the hollow ca 4 and pushed u wardly until the edges. 0 the member 5 wi spring into contact with portions of the wall'and retain the member 5 from coming out.

When the insert as described is placed within the cap 4 the cap may, ofcourse, be

used to perform its regular-function in connection with the c of the writing pencil, and when it is desired to point theend of a writin lead the cap 4 may be removed and the-en of the writing lead thrust into therecess 7 turned around therein which will result in pointing the lead.

In Fig.7 there is shown a modified form ofdevice. to be. inserted within the cap 4.

This comprises a body portion which has a inner conical recess 11. From the ro ded portion 9 there is a .-c .lindrical s rt-like portion 12, which at its ower end is slightly outwardly flared, as indicated at 13. .This device may be inserted within the hollow ca member 4, andthe lower edge of the cy drical portion 12 will frictionall engage with portions within the cap 4 and h the inserted member'in place.

rounded part 9 from which projects in a reverse direction an extension-10 hay an old In Fig. 8 there is shown another modified form in which, the inserted member consists of a rounded portion 14 having an extension 15 which has a conical recess 16. The rounded portion 14 has a cylindrical flange .17 with an outwardly flarindg edge 18. The flange 17 extends upwar ly round the rounded portion 14 and the extension 15. When the insert is pushed within a cap 4 the flared edge 18 will ultimately engagewith portions of the inner side wall of the member 4 within the top and retain it in place.

The various forms which have been. described all have conical recesses, and in each instance the wall will be formed in such a manner as to provide an abrasive action when a writing lead is introduced into it andturned.

The foregoing inserts may be conveniently formed from sheet metal as a'stamping.

In Fig. 12 the 'nsert is formed with a body portion 19 in w a conical recess 20, and the material of which the body portion 19 is formedis of abrasive material, such for instance, as carborundum, or any other suitable material. The member 19 may have formed therein a groove 21 in which is seated a flexible gasket 22, which may be made of rubber or any other suitablematerial, so that when the member 19 is pushed within the cap 4, the frictional en' gagement between the side wall of the caph4 t e member 19 in its inserted position.

In Fig. 13 there is shown a further modified form in which there is a member 23 that has a cylindrical recess 24, the wall of which is abrasive in the same fashion as that described with respect to Fig. 6. This member 23 may be formed ofsheet metal and embedded in a body of resilient material 25 which may be of cork or any other 'suitable material having the same property so far as compressibility is concerned.

The'cork body or similar material may be forced inside of the ca member 4 into the top portlon thereof, an may be retained by the frictional engagement between the ma-'. 'terial 25 and the side wall of the cap 4. In Fig. 10 thereis shown a form in which theca 4 may be pierced by a couple of opposite y disposed openings at the top thereof through which may extend tongues 26 of. a body portion 27 which body portion has a reentrant conical shaped recess 28., the wall of which is made to be abrasive in the same manner as before described. When the extensions 26 are shoved through the holes made in the top of the cap member 4 they may be bent inwardly u on the inside of the cap and so retain the s arpening device.

n Fig. 14 there is shown a cap 4 for use in replacement of a usual cap 4 in which the end of the cap'4 is provided with a conical so as to surich there is directly formed recess 29 which is directly formed in the cap. The inner wall of the recess 29 may be formed so as to be abrasive in the same manner as has before been described.

Having described my invention, I claim 1. The combination with a hollow casing having a tapered portion through the open end of which writing leads may be fed, of a cap forming-a closure for one end of the casing and having a sheet metal insert therein said metal insert havin tion with its free edges a apted to contact with. the side walls of the hollow cap, said member being provided with a substantially conical recess having an abrasive wall.

2. An insert for the cap of a casing of a writing pencil comprisin a body provided with a substantially conical recess havin'g abrasive walls, said body having a marginal 'edge portion engageable with a wall of the a rounded poring a rounded body portion with a resilient free edgeadapted to engage with the wall of 'a cap when inserted therein to retain the member in the cap, said sheet metal member having a projection providing a conical recess having an abrasive wall.

5. An insert forthe cap of, a casing of a writing pencil comprising a sheet metal member having a rounded portion with a conical extension providing a conical recess having an abrasive wall, a usbstantially cylindrical resilient flange at the edge of the rounded portion said cylindrical flange having a free edge adapted for engaging the wall of a hollow cap to retain the memberin the cap when inserted therein.

6. An insert for the cap of a casing of a writing pencil comprising a body having a substantially conical recess which has an abrasive surface, and a resilient edge ortion associated with the body for hol ing it within a ca 1 7. The com ination with a cap for a writing pencil having an inner portion adapted to fit upon the pencil and a portion of enlarged diameter, of an insert so formed to permit it to be passed through the inner portion of the cap and provided with lead pointing means, said insert having a portion expansible into engagement with the enlarged portion of the cap. 1

8. The combination with a sheet metal cap for a writing pencil, of a sheet metal member provided with lead pointing means and having a marginal portion engaging the outer end portion of the cap to secure the size and shape that it may be forced into same thereto. 4 the cap through the inner portion thereof 0 v9. The combination with a sheet metal and rung into engagement with the encap having 'an inner portion ada ted to fit lar portion thereof.

6 on a pencil and a portion of e ar ditestimony whereof, I hereunto aflix my ameter, of a member having a flexi le pe- Signature. ripheral portion and provided with lead pointing means, said member being of such RALPH D. STEVENSON. 

